javascript - 测试方法过度指定

Question

我的测试中有这个 before 函数:

before((done) => {
        const cognito = new Cognito();
        return cognito.authUser(
          '<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="c0aaafa8ae80a4afa5eea3afad" rel="noreferrer noopener nofollow">[email protected]</a>',
          'password',
        )
      .then((res) => {
        AuthToken += res.AuthenticationResult.IdToken;
        done();
      })
      .catch((err) => {
        done(err);
      });
  });

它抛出此错误:

Error: Resolution method is overspecified. Specify a callback *or* return a Promise; not both.

我认为这可能是解决办法:

before((done) => {
        const cognito = new Cognito();
        return new Promise(function(resolve) {
          cognito.authUser(
            '<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f79d989f99b7939892d994989a" rel="noreferrer noopener nofollow">[email protected]</a>',
            'password',
          )
        })
      .then((res) => {
        AuthToken += res.AuthenticationResult.IdToken;
        done();
      })
      .catch((err) => {
        done(err);
      });
  });

但它给了我这个错误:

Error: Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.

如何解决这个问题？

Answer 1

该错误解释了一点。

您不能同时使用回调和返回。

您有 2 个选择:

callback (the done parameter)

before((done) => {
    const cognito = new Cognito();
    cognito.authUser(
        '<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="2e444146406e4a414b004d4143" rel="noreferrer noopener nofollow">[email protected]</a>',
        'password',
    )
    .then((res) => {
        AuthToken += res.AuthenticationResult.IdToken;
        done();
    })
    .catch((err) => done(err));
});

或

Return promise

before(() => {
    const cognito = new Cognito();
    return cognito.authUser(
        '<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="84eeebeceac4e0ebe1aae7ebe9" rel="noreferrer noopener nofollow">[email protected]</a>',
        'password',
    )
    .then((res) => {
        AuthToken += res.AuthenticationResult.IdToken;
    })
});